<?php

class PersonController extends Controller {

    /**
     * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
     * using two-column layout. See 'protected/views/layouts/column2.php'.
     */
    public $layout = '//layouts/column2';

    /**
     * @return array action filters
     */
    public function filters() {
        return array(
            'accessControl', // perform access control for CRUD operations
        );
    }

    /**
     * Specifies the access control rules.
     * This method is used by the 'accessControl' filter.
     * @return array access control rules
     */
    public function accessRules() {
        return array(
            array('allow', // allow all users to perform 'index' and 'view' actions
                'actions' => array('index', 'view'),
                'users' => array('*'),
            ),
            array('allow', // allow authenticated user to perform 'create' and 'update' actions
                'actions' => array('create', 'update'),
                'users' => array('@'),
            ),
            array('allow', // allow admin user to perform 'admin' and 'delete' actions
                'actions' => array('admin', 'delete'),
                'users' => array('admin'),
            ),
            array('deny', // deny all users
                'users' => array('*'),
            ),
        );
    }

    /**
     * Displays a particular model.
     * @param integer $id the ID of the model to be displayed
     */
    public function actionView($id) {
        $this->render('view', array(
            'model' => $this->loadModel($id),
        ));
    }

    /**
     * Creates a new model.
     * If creation is successful, the browser will be redirected to the 'view' page.
     */
    public function actionCreate() {
        $model = new Person;

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        if (isset($_POST['Person'])) {

            $model->attributes = $_POST['Person'];

            $uploadedFile = CUploadedFile::getInstance($model, 'image');
            if ($uploadedFile != null) {
                $rnd = rand(0, 9999); //得到随机数 between 0-9999
                $fileName = "{$rnd}-{$uploadedFile}";
            } else {
                $fileName = 'nopic.jpg';
            }
            //这里保存图片名称到数据库image字段
            $model->image = $fileName;

            if ($model->save()) {
                if ($uploadedFile != null) {
                    $uploadedFile->saveAs(Yii::app()->basePath . '/../images/' . $fileName); //图片上传路径
                }
                $this->redirect(array('view', 'id' => $model->id));
            }
        }

        $this->render('create', array(
            'model' => $model,
        ));
    }

    /**
     * Updates a particular model.
     * If update is successful, the browser will be redirected to the 'view' page.
     * @param integer $id the ID of the model to be updated
     */
    public function actionUpdate($id) {
        $model = $this->loadModel($id);

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        if (isset($_POST['Person'])) { //不空或者不为默认的就为原来名称
            if (!empty($model->image) || $model->image != "nopic.jpg") {
                $_POST['Person']['image'] = $model->image;
            }
            $model->attributes = $_POST['Person'];

            $uploadedFile = CUploadedFile::getInstance($model, 'image');
            
            if ($uploadedFile != null) { //不空或者不为默认的就为原来名称
                if (!empty($model->image) || $model->image != "nopic.jpg") {
                 $fileName= $model->image;  
                } else {
                    $rnd = rand(0, 9999); //得到随机数 between 0-9999
                    $fileName = "{$rnd}-{$uploadedFile}";
                }
            }

            //这里保存图片名称到数据库image字段
            if (!empty($fileName))
                $model->image = $fileName;

            if ($model->save())
                if (!empty($uploadedFile)) {  // check if uploaded file is set or not
                    $uploadedFile->saveAs(Yii::app()->basePath . '/../images/' . $fileName);
                }
            $this->redirect(array('view', 'id' => $model->id));
        }

        $this->render('update', array(
            'model' => $model,
        ));
    }

    /**
     * Deletes a particular model.
     * If deletion is successful, the browser will be redirected to the 'admin' page.
     * @param integer $id the ID of the model to be deleted
     */
    public function actionDelete($id) {
        if (Yii::app()->request->isPostRequest) {
            // we only allow deletion via POST request
            $this->loadModel($id)->delete();

            // if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
            if (!isset($_GET['ajax']))
                $this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
        } else
            throw new CHttpException(400, 'Invalid request. Please do not repeat this request again.');
    }

    /**
     * Lists all models.
     */
    public function actionIndex() {
        /*
          $dataProvider=new CActiveDataProvider('Person');
          $this->render('index',array(
          'dataProvider'=>$dataProvider,
          ));
         * 
         */
        $model = new Person('search');
        $model->unsetAttributes();  // clear any default values
        if (isset($_GET['Person']))
            $model->attributes = $_GET['Person'];

        $this->render('index', array(
            'model' => $model,
        ));
    }

    /**
     * Manages all models.
     */
    public function actionAdmin() {
        $model = new Person('search');
        $model->unsetAttributes();  // clear any default values
        if (isset($_GET['Person']))
            $model->attributes = $_GET['Person'];

        $this->render('admin', array(
            'model' => $model,
        ));
    }

    /**
     * Returns the data model based on the primary key given in the GET variable.
     * If the data model is not found, an HTTP exception will be raised.
     * @param integer the ID of the model to be loaded
     */
    public function loadModel($id) {
        $model = Person::model()->findByPk($id);
        if ($model === null)
            throw new CHttpException(404, 'The requested page does not exist.');
        return $model;
    }

    /**
     * Performs the AJAX validation.
     * @param CModel the model to be validated
     */
    protected function performAjaxValidation($model) {
        if (isset($_POST['ajax']) && $_POST['ajax'] === 'person-form') {
            echo CActiveForm::validate($model);
            Yii::app()->end();
        }
    }

}
